CN105992014B - A kind of method, apparatus of projecting image data, transmitting terminal and receiving end - Google Patents
A kind of method, apparatus of projecting image data, transmitting terminal and receiving end Download PDFInfo
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- CN105992014B CN105992014B CN201510071286.7A CN201510071286A CN105992014B CN 105992014 B CN105992014 B CN 105992014B CN 201510071286 A CN201510071286 A CN 201510071286A CN 105992014 B CN105992014 B CN 105992014B
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Abstract
The present invention provides method, apparatus, transmitting terminal and the receiving end of a kind of projecting image data, is related to the communications field.This method is applied to transmitting terminal, comprising: transmitting terminal and receiving end are established with after screen session, when transmitting terminal transmits static images to receiving end, establish a wireless connection channel with receiving end；Transmitting terminal is transmitted static images data to receiving end, decodes receiving end and show the static images by the wireless connection channel.The solution of the present invention realizes that static images in the smooth playing of receiving end, promote wireless display effect by establishing the static images wireless connection channel shared with screen.
Description
Technical field
The present invention relates to the communications fields, particularly relate to method, apparatus, transmitting terminal and the reception of a kind of projecting image data
End.
Background technique
It is wireless to share this emerging application with screen and also become at present on mobile terminals as mobile terminal rapidly develops
Urgent need, industry provide multiple technologies scheme, include that WiFi (Wireless Fidelity, Wireless Fidelity) alliance pushes away
WFD (Wireless Fidelity Display, cross-platform wireless connection) technology out, the leading radio play of apple
Ariplay technology, the schemes such as Digital Life Network Alliance DLAN technology.Wherein WFD is the most gigantic and vigorous, and WFD technology is now
Through being widely used in every field, one of them more classical application is wireless display.With recent years, projector is being taught
Educate, commercial affairs, the industries such as government department using increasingly extensive, and wireless display technology also just receives the concern of people, still
Wireless transmission is limited to network bandwidth, if wireless transmission larger flow file, just will appear image card shell and delay phenomenon.With
Newest 4.2 system of Android supported it is wireless with screen Miracast agreement, the interconnection of mobile terminal and Wireless projector
Demand is also increasingly strong, and many mobile terminals are as wirelessly the same as the originating end of screen, it is already possible to conveniently and miracast be supported to flow
The projector of broadcasting is easily connected.
But existing miracast agreement is complete screen mirror image function, does not distinguish the content of current mirror image itself,
It is equally to carry out screen number for the media data (such as lantern slide, the file of the types such as static images) without frequently refreshing screen
According to acquisition after encoded, generally use H264, then and by the data transmission after coding the stream media formats such as M-JPEG give
Receiving end, receiving end carries out decoding operate after receiving these files in stream media, then by decoded file in receiving device
Upper broadcasting.Due to H264, the stream medium data amount of the formats such as M-JPEG is bigger, and receiving device is also required to decode in due course and broadcast
It puts, often results in the not smooth enough of receiving end broadcasting, influence the effect of wireless display.Meanwhile also resulting in the higher net that compares
Network expense limits miracast in the use in wireless display field.
Summary of the invention
The object of the present invention is to provide a kind of method, apparatus of projecting image data, transmitting terminal and receiving ends, by wireless
Interface channel carries out lasting streaming media without frequently refreshing screen in projection static picture, static map can be realized
The smooth playing of piece promotes wireless display effect.
In order to achieve the above objectives, the embodiment of the present invention provides a kind of method of projecting image data, is applied to transmitting terminal,
Include:
After transmitting terminal and receiving end are established with session is shielded, when transmitting terminal transmits static images to receiving end, with receiving end
Establish a wireless connection channel；
Transmitting terminal transmits static images data to receiving end, receiving end is made to decode and show by the wireless connection channel
Show the static images.
Wherein, transmitting terminal is established with receiving end includes: with the process for shielding session
Transmitting terminal finds request message to receiving end sending device；
Transmitting terminal completes service discovery after completing equipment discovery with receiving end, with receiving end, connect foundation, ability association
After the interaction that quotient, session establishment, data transmission and session are completed, establish with receiving end with screen session.
Wherein, the process that a wireless connection channel is established with receiving end includes:
After transmitting terminal gets static images send instructions, negotiation request message is sent to receiving end, request receiving end is stopped
Only video data decoding；Wherein, the negotiation request message includes: the basic parameter of static images to be sent；
After transmitting terminal receives the negotiation request-reply message of receiving end return, according in the negotiation request-reply message
The Internet protocol address determined in the connecting pin slogan of receiving end and established same screen session, establishes transmitting terminal and receives
Wireless connection channel between end；Wherein, the request-reply message of negotiating includes: the static images that receiving end can be supported
Basic parameter.
Wherein, by the wireless connection channel, transmit static images data to the process of receiving end includes: transmitting terminal
Increase data packet head in the data packet of static images data to be sent；The data packet head includes: data packet
Sequence number, the number of a picture conceptual data packet, transmits the number of picture, transmits the compressed format of image data, picture number
According to resolution ratio and verification data；
By the wireless connection channel, transmitting has the static images data of the data packet head to receiving end.
Wherein, transmitting terminal is by the wireless connection channel, after transmitting static images data to receiving end further include:
After getting common send instructions, the transmission of static images data is terminated；
It sends wireless connection channel and removes request to receiving end, tear the wireless connection channel between transmitting terminal and receiving end open
It removes.
Wherein, the static images send instructions are user's operation triggerings or detect that content to be transmitted is static images
When automatic trigger.
In order to achieve the above objectives, the embodiments of the present invention also provide a kind of devices of projecting image data, are applied to hair
Sending end, comprising:
First connection establishment module is established for transmitting terminal and receiving end with after screen session, and transmitting terminal transmits static map
When piece is to receiving end, a wireless connection channel is established with receiving end；
Transmission module transmits static images data to receiving end, makes to connect for transmitting terminal by the wireless connection channel
Receiving end decodes and shows the transmission static images.
Wherein, first connection establishment module includes:
First sending submodule finds request message to receiving end sending device for transmitting terminal；
First with screen session establishment submodule, for transmitting terminal after completing equipment discovery with receiving end, with receiving end
After completing service discovery, connection foundation, capability negotiation, session establishment, data transmission and the interaction of session completion, with receiving end
It establishes with screen session.
Wherein, first connection establishment module includes:
Second sending submodule after getting static images send instructions for transmitting terminal, sends to receiving end and negotiates to ask
Message is sought, request receiving end stops video data decoding；Wherein, the negotiation request message includes: static images to be sent
Basic parameter；
Wireless connection channel setting up submodule receives the negotiation request-reply message of receiving end return for transmitting terminal
Afterwards, mutual according to being determined in the connecting pin slogan of receiving end in the negotiation request-reply message and established same screen session
The wireless connection channel between transmitting terminal and receiving end is established in networking protocol address；Wherein, the negotiation request-reply message package
It includes: receiving the basic parameter for the static images that terminal can be supported.
Wherein, the transmission module includes:
Submodule is handled, for increasing data packet head in the data packet of static images data to be sent；The data packet
Head includes: the sequence number of data packet, and the number of a picture conceptual data packet transmits the number of picture, transmits image data
Compressed format, the resolution ratio and verification data of image data；
Submodule is transmitted, for transmitting the static map the piece number with the data packet head by the wireless connection channel
According to receiving end.
Wherein, described device further include:
It sends and terminates module, for terminating the transmission of static images data after getting common send instructions；
Wireless connection channel removes module, removes request to receiving end for sending wireless connection channel, make transmitting terminal with
Wireless connection channel between receiving end is removed.
In order to achieve the above objectives, the embodiments of the present invention also provide a kind of method of projecting image data, applied to connecing
Receiving end, comprising:
After receiving end and transmitting terminal are established with session is shielded, when receiving end receives the static images of transmitting terminal transmission, with hair
Sending end establishes a wireless connection channel；
Receiving end is received the static images data of transmitting terminal transmission, is decoded and show institute by the wireless connection channel
State static images.
Wherein, receiving end is established with transmitting terminal includes: with the process for shielding session
Receiving end is found after receiving the equipment discovery request message of transmitting terminal transmission to the transmitting terminal returning equipment
Request-reply message；
Service discovery is completed after completing equipment discovery with transmitting terminal, with transmitting terminal, connect foundation, ability association in receiving end
After the interaction that quotient, session establishment, data transmission and session are completed, establish with transmitting terminal with screen session.
Wherein, the process that a wireless connection channel is established with transmitting terminal includes:
After receiving end receives the negotiation request message of transmitting terminal transmission, stop video data decoding, is returned to transmitting terminal
Negotiate request-reply message；Wherein, the negotiation request message includes: the basic parameter of static images to be sent；The negotiation
Request-reply message includes: the basic parameter for the static images that the receiving end can be supported and the connectivity port of the receiving end
Number.
Wherein, data packet head is increased in the data packet of the static images data received, the data packet head includes: number
According to the sequence number of packet, the number of a picture conceptual data packet transmits the number of picture, transmits the compressed format of image data,
The resolution ratio and verification data of image data.
Wherein, receiving end is received the static images data of transmitting terminal transmission, is decoded and shown by the wireless connection channel
The process for showing the static images includes:
By the wireless connection channel, the static images data with the data packet head of transmitting terminal transmission are received；
According to the data packet head, static images data are decoded and show the static images.
Wherein, receiving end is received the static images data of transmitting terminal transmission, is decoded and shown by the wireless connection channel
After showing the static images further include:
After the wireless connection channel dismounting request for receiving transmitting terminal transmission, reception, the decoding of static images data are terminated
And display.
In order to achieve the above objectives, the embodiments of the present invention also provide a kind of device of projecting image data, applied to connecing
Receiving end, comprising:
Second connection establishment module is established for receiving end and transmitting terminal with after screen session, and receiving end receives transmitting terminal
When the static images of transmission, a wireless connection channel is established with transmitting terminal；
Receiving module receives the static images data of transmitting terminal transmission for receiving end by the wireless connection channel,
It decodes and shows the static images.
Wherein, second connection establishment module includes:
Third sending submodule, for receiving end after receiving the equipment discovery request message of transmitting terminal transmission, to institute
State transmitting terminal returning equipment discovery request-reply message；
Second with screen session establishment submodule, for receiving end after completing equipment discovery with transmitting terminal, with transmitting terminal
After completing service discovery, connection foundation, capability negotiation, session establishment, data transmission and the interaction of session completion, with transmitting terminal
It establishes with screen session.
Wherein, second connection establishment module includes:
4th sending submodule after receiving the negotiation request message that transmitting terminal is sent for receiving end, stops video counts
According to decoding, is returned to transmitting terminal and negotiate request-reply message；Wherein, the negotiation request message includes: static images to be sent
Basic parameter；It is described negotiate request-reply message include: the static images that the receiving end can be supported basic parameter and
The connecting pin slogan of the receiving end.
Wherein, data packet head is increased in the data packet of the static images data received, the data packet head includes: number
According to the sequence number of packet, the number of a picture conceptual data packet transmits the number of picture, transmits the compressed format of image data,
The resolution ratio and verification data of image data.
Wherein, the receiving module includes:
Receiving submodule, for by the wireless connection channel, receive transmitting terminal transmission to have the data packet head
Static images data；
Decoding and display sub-module, for being decoded to static images data and showing institute according to the data packet head
State static images.
Wherein, described device further include:
Reception, decoding and display terminate module, after the wireless connection channel dismounting request for receiving transmitting terminal transmission,
Terminate reception, decoding and the display of static images data.
In order to achieve the above objectives, the embodiments of the present invention also provide a kind of transmitting terminals of projecting image data, including such as
The device of the upper projecting image data applied to transmitting terminal.
In order to achieve the above objectives, the embodiments of the present invention also provide a kind of receiving ends of projecting image data, including such as
The device of the upper projecting image data applied to receiving end.
The advantageous effects of the above technical solutions of the present invention are as follows:
The method of the projecting image data of the embodiment of the present invention, transmitting terminal and receiving end are established with after screen session, are sent
When end transmission static images are to receiving end, a wireless connection channel can be established with receiving end, then, pass through the wireless connection channel
Transmit static images data.This method can not only realize that the same screen of video data is shared, and need shared static images
When this kind of data, it is switched to static data transmitting scene, by establishing the static images wireless connection channel shared with screen, is not necessarily to
Static images are transmitted by same screen session, static images is realized in the smooth playing of receiving end, promotes wireless display effect,
Meanwhile it avoiding the frequent network bandwidth expense caused by the processing of screen real-time Data Transmission etc. that refreshes and consuming excessively.
Detailed description of the invention
Fig. 1 shows existing with the shared protocol architecture figure for realizing transmitting terminal and terminal of screen；
Fig. 2 indicates the step schematic diagram of the method for the projecting image data for transmitting terminal of the embodiment of the present invention；
Fig. 3 indicates the specific steps schematic diagram of the method for the projecting image data for transmitting terminal of the embodiment of the present invention；
Fig. 4 indicates the application schematic diagram of the method for the projecting image data for transmitting terminal of the embodiment of the present invention；
Fig. 5 indicates the step schematic diagram of the method for the projecting image data for receiving end of the embodiment of the present invention；
Fig. 6 indicates the structural schematic diagram of the device of the projecting image data for transmitting terminal of the embodiment of the present invention；
Fig. 7 indicates the structural schematic diagram of the device of the projecting image data for receiving end of the embodiment of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention is complete screen mirror image function for existing same screen technology of sharing, does not distinguish current mirror image itself
Content carries out the operation, such as Fig. 1 such as encoding after equally carrying out the media data without frequently refreshing screen the acquisition of screen data
Shown in protocol architecture figure, the media data static images thus caused without frequently refreshing screen are in due course in receiving end
The problem of decoding plays, and causes the not smooth of broadcasting, and influences the effect of wireless display, provides a kind of side of projecting image data
Method carries out lasting streaming media without frequently refreshing screen in projection static picture, realizes that the smoothness of static images is broadcast
It puts, promotes wireless display effect.
As shown in Fig. 2, a kind of method of projecting image data of the embodiment of the present invention, is applied to transmitting terminal, comprising:
Step 11, after transmitting terminal and receiving end are established with session is shielded, when transmitting terminal transmits static images to receiving end, with
A wireless connection channel is established in receiving end；
Step 12, transmitting terminal transmits static images data to receiving end, solves receiving end by the wireless connection channel
Code simultaneously shows the static images.
The basis shared with screen with screen session, video data (including audio data) need transmitting terminal and receiving end it
Between establish with screen session, establish the connection of transmitting terminal and receiving end, could be realized and the Display on the same screen of transmitting terminal in receiving end.By
It will do it lasting data transmission when same screen session, the data that transmitting terminal frequently refreshes screen are compiled after carrying out data acquisition
The processing such as code, in this way, receiving end will decode broadcasting after receiving data in due course, then, for static images and with its class
As media data will appear in receiving end if completing data transmission using with screen session and play slack problem.
It therefore, in embodiments of the present invention, is the representative of such media data with static images, such as above-mentioned steps 11, hair
Sending end and receiving end are established with after screen session, when transmitting terminal transmits static images to receiving end, can establish a nothing with receiving end
Then line interface channel such as step 12, transmits static images data by the wireless connection channel.The throwing of the embodiment of the present invention
The method of shadow image data can not only realize that the same screen of video data is shared, and need shared this kind of number of static images
According to when, static data transmitting scene is switched to, by establishing the static images wireless connection channel shared with screen, without by same
Shield session to transmit static images, realizes static images in the smooth playing of receiving end, promote wireless display effect, meanwhile,
Network bandwidth expense caused by frequently refreshing the processing of screen real-time Data Transmission etc. is avoided to consume excessively.
Certainly, the method for the projecting image data of the embodiment of the present invention is also to be suitable for a kind of matchmaker similar with static images
Volume data, it will not enumerate herein.
As shown in the above, it first has to establish with screen session.As shown in figure 3, transmitting terminal is built with receiving end in step 11
It is vertical to include: with the process for shielding session
Step 111, transmitting terminal finds request message to receiving end sending device；
Step 112, transmitting terminal completes service discovery with receiving end, connect and build after completing equipment discovery with receiving end
After the interaction that vertical, the transmission of capability negotiation, session establishment, data and session are completed, establish with receiving end with screen session.
According to above-mentioned steps 111,112, transmitting terminal first has to complete equipment discovery, and sending device finds request message, connects
After receiving end receives equipment discovery request message, request-reply message can be found to transmitting terminal returning equipment, then
Receive the equipment discovery request-reply message of receiving end return.Later, transmitting terminal and receiving end complete service discovery, connect and build
After the interaction that vertical, the transmission of capability negotiation, session establishment, data and session are completed, establish with receiving end with screen session.By this
With screen session, the same screen that video data may be implemented is shared.
It establishes with after screen session, the same screen that video data may be implemented is shared, however, due to above content it is found that with screen
Session is the media data of not applicable static images one kind, therefore, on the basis of the above embodiments, the projection of the embodiment of the present invention
The method of image data, in step 11, the process for establishing a wireless connection channel with receiving end includes:
Step 113, after transmitting terminal gets static images send instructions, negotiation request message, request are sent to receiving end
Receiving end stops video data decoding；Wherein, the negotiation request message includes: the basic parameter of static images to be sent；
Step 114, it after transmitting terminal receives the negotiation request-reply message that receiving end returns, is answered according to negotiation request
The Internet protocol address determined in the connecting pin slogan and established same screen session of receiving end in message is answered, establishes and sends
Wireless connection channel between end and receiving end；Wherein, the negotiation request-reply message include: receiving end can support it is quiet
The basic parameter of state picture.
Since wireless connection channel is that just needs are used when needing this kind of media data of shared static images, so,
Static images send instructions are got, shows currently to prepare transmission static images, needs to be switched to static data transmitting scene,
Establish wireless connection channel.Such as step 113, after transmitting terminal gets static images send instructions, is sent to receiving end and negotiate to ask
Message is sought, request receiving end stops video data decoding.Transmitting terminal sends negotiation request message to receiving end, is notified that receiving end
The preparation of switching static data transmitting scene is done, video data decoding receiving end is stopped, receiving end is ready to complete, and returns to transmitting terminal
Negotiate request-reply message.The negotiation request message includes the basic parameter such as picture format, resolution ratio of static images to be sent
Deng another object is that asking whether to support the relevant parameter of static images to be sent to receiving end, while also being initiated to receiving end
Wireless connection channel is established, inquires the connecting pin slogan of receiving end.
Later, such as step 114, after the negotiation request-reply message for receiving receiving end return, according to negotiation request-reply
In message the connecting pin slogan of receiving end and it is established with screen session in determine internet protocol address, establish send
Wireless connection channel between end and receiving end.The negotiation request-reply message can carry the connecting pin that receiving end receives transmission
Slogan, and it is to be understood that establish wireless connection channel such as User Datagram Protocol UDP interface channel, except need to know reception
The connecting pin slogan at end, it is also necessary to which IP address can be from the data of WDF session due to being had been set up before with screen WDF session
It is got in information unit WFD IE, the IP address can be directly obtained, cannot such as be directly obtained can also be by getting MAC
Indirect reference is to the IP address behind address.
And negotiation request-reply message further include: the basic parameter for the static images that receiving end can be supported informs hair
Sending end can remind user for the static images that receiving end is not supported in this way, transmitting terminal recognizes the ability of receiving end in advance
It is adjusted and is being sent, error situation when transmission, display is reduced.
It should be appreciated that receiving end only has the decoding capability of static images one kind media data, built with receiving end
Vertical wireless connection channel is just meaningful, and therefore, before establishing wireless connection channel, transmitting terminal is connect by query messages inquiry
Receiving end receives static data decoding capability, replys inquiry request response message in receiving end, when ability is met the requirements, executes above-mentioned steps
113 and 114.
It should also be understood that in embodiments of the present invention, the static images send instructions are user's operation triggerings
Or detect automatic trigger when content to be transmitted is static images.
The operation that user directly selects static images transmission triggers the static images send instructions, is also possible to detecting
Send automatic trigger when data are static images, certainly, other triggering situations appropriate also in protection scope of the present invention,
This is not listed one by one.Wireless connection channel can carry out the transmission of static images after being successfully established, it is well known that, in number
According in transmission, transmitted again after being often packaged data, in an embodiment of the present invention, for the ease of receiving end to data packet into
Row processing, step 12 include:
Step 121, increase data packet head in the data packet of static images data to be sent；The data packet head includes:
The sequence number of data packet, the number of a picture conceptual data packet, transmits the number of picture, transmits the compression lattice of image data
Formula, the resolution ratio and verification data of image data；
Step 122, by the wireless connection channel, transmitting has the static images data of the data packet head to reception
End.
Firstly, in transmitting terminal to the sequence number including data packet is increased in data packet, a picture is overall such as step 121
The number of data packet transmits the number of picture, transmits the compressed format of image data, the resolution ratio and check number of image data
According to data packet head.In this way, the sequence number by knowing data packet, the number of a picture conceptual data packet, transmit picture
Number, receiving end can decide whether the data packet for all receiving transmitting terminal transmission, it is larger to be certainly included in certain image data
When, when completing data transmission by multiple data packets, if receive the judgement of entire packet；By the pressure for knowing image data
Contracting format and verification data, receiving end can complete to decompress and verify；By knowing the resolution ratio of image data, receiving can be with
The corresponding display etc. for carrying out static images.
After increasing data packet head in the packet, so that it may step 122 is pressed, by the static map the piece number with data packet head
Receiving end is transmitted to according to by wireless connection channel.
It should be appreciated that data packet often occurs and loses in the transmission for various reasons in data transmission procedure
The problem of, to cause receiving end that can not receive complete data, realize that expected image is shown, therefore, in above-mentioned implementation
On the basis of example, in the embodiment of the present invention, static images data are sent to after receiving terminal in first passage wireless connection channel,
Secondary transmission static images data are to receiving terminal.In this way, receiving end it is secondary receive data packet after, believe according in data packet head
Breath checks, if current data packet has been successfully decoded after receiving for the first time, can drop, does not succeed if decoded for the first time,
The data packet that decodable code secondary reception arrives, preferably ensure that the transmission quality of data.Certainly, it can also carry out three times or more
Secondary transmission is preferably embodied as transmitting twice.
After static images are transmitted, when carrying out the transmission of video data, it is necessary to switch over, implement in the present invention
In example, after step 12 further include:
Step 13, after getting common send instructions, the transmission of static images data is terminated；
Step 14, it sends wireless connection channel and removes request to receiving end, make wirelessly connecting between transmitting terminal and receiving end
Road is connected to remove.
By step 13 and 14, after getting common send instructions, the transmission of static images data is terminated, view is switched back into
Then frequency scene sends wireless connection channel and removes request to receiving end, keep the wireless connection between transmitting terminal and receiving end logical
Road dismounting after receiving end receives wireless connection channel dismounting request, terminates the reception of static images data, decodes and show
Show, switches to video flowing and pass through with screen mode, transmitting terminal and receiving end with screen session transmissions video data.
The message of above content can be by RTSP (the Real Time for being wirelessly connected shared Wi-Fi Disply extension
Streaming Protocol, real-time stream media protocol) M3/M4/M15 message realizes that design parameter is defined as follows shown in table:
Illustrate that the method for the projecting image data of the embodiment of the present invention is answered between transmitting terminal and receiving end below with reference to Fig. 4
With:
The basis connection between transmitting terminal and receiving end is initially set up with screen session, transmitting terminal is sent out to receiving end sending device
Existing request message, such as S401；After receiving end receives equipment discovery request message, it can be answered to the discovery request of transmitting terminal returning equipment
Answer message, such as S402.Find that request message and equipment find that request-reply interacting message realizes equipment discovery by equipment.It
Afterwards, service discovery, connection foundation, capability negotiation, session establishment, data transmission and session are completed between transmitting terminal and receiving end
After the interaction of completion, the same screen session between transmitting terminal and receiving end is finally established, the same screen that can carry out video data is shared.
When transmitting terminal gets static images send instructions, illustrates currently to prepare transmission static images, need to be switched to quiet
State data transmitting scene, establishes wireless connection channel.Then, transmitting terminal sends negotiation request message to receiving end, to receiving end
Stop video data decoding, ask whether the relevant parameter for supporting static images to be sent, while also initiating to establish to receiving end
Wireless connection channel inquires the connecting pin slogan of receiving end, such as S403；Receiving end, which returns, negotiates request-reply message, informs hair
The connecting pin slogan of sending end receiving end and the basic parameter for the static images that can be supported, such as S404.Transmitting terminal and receiving end
Between negotiate complete, transmitting terminal according to negotiate request-reply message in receiving end connecting pin slogan and it is established with screen meeting
The internet protocol address determined in words, establishes the wireless connection channel between transmitting terminal and receiving end.
Transmitting terminal is to sent increasing data packet head in the data packet of static images data, by wireless connection channel,
Transmitting has the static images data of data packet head to receiving end, and receiving end is according to data packet head to the decoded packet data received
And show static images.
When transmitting terminal gets common send instructions, illustrates currently to prepare transmitting video data, need to switch back into video field
Scape, then, transmitting terminal send wireless connection channel and remove request to receiving end, such as S405, and receiving end receives the wireless connection
After request is removed in channel, reception, decoding and the display of static images data are terminated, switches to video flowing with screen mode, transmitting terminal
Pass through with receiving end with screen session transmissions video data.
Certainly, there are also the interactions of some other message not to show in figure, such as: transmitting terminal is established wirelessly with receiving end
Static data decoding capability can be received by query messages inquire-receive end before interface channel, reply inquiry response in receiving end and disappear
Breath, ability carry out wireless connection channel establishment process after meeting the requirements.
In conclusion the method for the projecting image data of the embodiment of the present invention, can not only realize the same of video data
Screen is shared, and when needing this kind of data of shared static images, static data transmitting scene is switched to, by establishing static map
Piece is same to shield shared wireless connection channel, and without transmitting static images by same screen session, reduction is same to shield the expense in sharing,
Static images are realized in the smooth playing of receiving end, promote wireless display effect, meanwhile, it is real-time to avoid frequently refreshing screen
Network bandwidth expense etc. caused by data transmission and processing consumes excessively.After transmitting terminal and receiving end are negotiated, transmission can be facilitated not
Same format picture, can be according to the situation dynamic change of Network status and terminal device itself in shared procedure.
As shown in figure 5, it is applied to receiving end the embodiments of the present invention also provide a kind of method of projecting image data,
Include:
Step 21, receiving end and transmitting terminal are established with after screen session, and receiving end receives the static images of transmitting terminal transmission
When, a wireless connection channel is established with transmitting terminal；
Step 22, receiving end receives the static images data of transmitting terminal transmission, decoding is simultaneously by the wireless connection channel
Show the static images.
Wherein, in step 21, receiving end is established with transmitting terminal includes: with the process for shielding session
Step 211, receiving end returns after receiving the equipment discovery request message of transmitting terminal transmission to the transmitting terminal
Equipment finds request-reply message；
Step 212, receiving end completes service discovery with transmitting terminal, connect and build after completing equipment discovery with transmitting terminal
After the interaction that vertical, the transmission of capability negotiation, session establishment, data and session are completed, establish with transmitting terminal with screen session.
Wherein, in step 21, the process for establishing a wireless connection channel with transmitting terminal includes:
Step 213, after receiving end receives the negotiation request message that transmitting terminal is sent, stop video data decoding, Xiang Fa
Sending end, which returns, negotiates request-reply message；Wherein, the negotiation request message includes: the basic parameter of static images to be sent；
It is described to negotiate the basic parameter and the receiving end that request-reply message includes: the static images that the receiving end be supported
Connecting pin slogan.
Wherein, data packet head is increased in the data packet of the static images data received, the data packet head includes: number
According to the sequence number of packet, the number of a picture conceptual data packet transmits the number of picture, transmits the compressed format of image data,
The resolution ratio and verification data of image data.
Wherein, step 22 includes:
Step 221, by the wireless connection channel, the static map with the data packet head of transmitting terminal transmission is received
Sheet data；
Step 222, according to the data packet head, static images data is decoded and show the static images.
Wherein, after step 22 further include:
Step 23, after the wireless connection channel dismounting request for receiving transmitting terminal transmission, connecing for static images data is terminated
It receives, decode and shows.
Wherein, the static images send instructions are user's operation triggerings or detect that content to be transmitted is static images
When automatic trigger.
In conclusion the method for the projecting image data of the embodiment of the present invention, is applied to receiving end, can not only realize
The same screen of video data is shared, and when needing this kind of data of shared static images, is switched to static data transmitting scene, leads to
It crosses and establishes the static images wireless connection channel shared with screen, without transmitting static images by same screen session, reduce same screen
Expense in shared realizes static images in the smooth playing of receiving end, promotes wireless display effect, meanwhile, avoid frequency
Network bandwidth expense caused by numerous refreshing screen real-time Data Transmission processing etc. consumes excessively.After transmitting terminal and receiving end are negotiated,
Transmission different-format picture can be facilitated, it can be according to the situation dynamic of Network status and terminal device itself in shared procedure
Variation.
It should be noted that this method is the method for the above-mentioned projecting image data for transmitting terminal with respect to receiving end
Method, the implementation of the method for the above-mentioned projecting image data for transmitting terminal is suitable for this method, can also reach identical
Technical effect.
As shown in fig. 6, it is applied to transmitting terminal the embodiments of the present invention also provide a kind of device of projecting image data,
Include:
First connection establishment module 60 is established for transmitting terminal and receiving end with after screen session, and transmitting terminal transmission is static
When picture is to receiving end, a wireless connection channel is established with receiving end；
Transmission module 61 is transmitted static images data to receiving end, is made for transmitting terminal by the wireless connection channel
Receiving end decodes and shows the transmission static images.
Wherein, first connection establishment module includes:
First sending submodule finds request message to receiving end sending device for transmitting terminal；
First with screen session establishment submodule, for transmitting terminal after completing equipment discovery with receiving end, with receiving end
After completing service discovery, connection foundation, capability negotiation, session establishment, data transmission and the interaction of session completion, with receiving end
It establishes with screen session.
Wherein, first connection establishment module includes:
Second sending submodule after getting static images send instructions for transmitting terminal, sends to receiving end and negotiates to ask
Message is sought, request receiving end stops video data decoding；Wherein, the negotiation request message includes: static images to be sent
Basic parameter；
Wireless connection channel setting up submodule receives the negotiation request-reply message of receiving end return for transmitting terminal
Afterwards, mutual according to being determined in the connecting pin slogan of receiving end in the negotiation request-reply message and established same screen session
The wireless connection channel between transmitting terminal and receiving end is established in networking protocol address；Wherein, the negotiation request-reply message package
It includes: receiving the basic parameter for the static images that terminal can be supported.
Wherein, the transmission module includes:
Submodule is handled, for increasing data packet head in the data packet of static images data to be sent；The data packet
Head includes: the sequence number of data packet, and the number of a picture conceptual data packet transmits the number of picture, transmits image data
Compressed format, the resolution ratio and verification data of image data；
Submodule is transmitted, for transmitting the static map the piece number with the data packet head by the wireless connection channel
According to receiving end.
Wherein, described device further include:
It sends and terminates module, for terminating the transmission of static images data after getting common send instructions；
Wireless connection channel removes module, removes request to receiving end for sending wireless connection channel, make transmitting terminal with
Wireless connection channel between receiving end is removed.
Wherein, the static images send instructions are user's operation triggerings or detect that content to be transmitted is static images
When automatic trigger.
In conclusion the device of the projecting image data of the embodiment of the present invention, is applied to transmitting terminal, can not only realize
The same screen of video data is shared, and when needing this kind of data of shared static images, is switched to static data transmitting scene, leads to
It crosses and establishes the static images wireless connection channel shared with screen, without transmitting static images by same screen session, reduce same screen
Expense in shared realizes static images in the smooth playing of receiving end, promotes wireless display effect, meanwhile, avoid frequency
Network bandwidth expense caused by numerous refreshing screen real-time Data Transmission processing etc. consumes excessively.After transmitting terminal and receiving end are negotiated,
Transmission different-format picture can be facilitated, it can be according to the situation dynamic of Network status and terminal device itself in shared procedure
Variation.
It should be noted that the device is the device for applying the method for the above-mentioned projecting image data for transmitting terminal,
The implementation of the method for the above-mentioned projecting image data for transmitting terminal is suitable for the device, can also reach identical technology effect
Fruit.
As shown in fig. 7, it is applied to receiving end the embodiments of the present invention also provide a kind of device of projecting image data,
Include:
Second connection establishment module 70, after establishing for receiving end and transmitting terminal with session is shielded, receiving end, which receives, to be sent
When holding the static images of transmission, a wireless connection channel is established with transmitting terminal；
Receiving module 71 receives the static map the piece number of transmitting terminal transmission for receiving end by the wireless connection channel
According to decoding and show the static images.
Wherein, second connection establishment module includes:
Third sending submodule, for receiving end after receiving the equipment discovery request message of transmitting terminal transmission, to institute
State transmitting terminal returning equipment discovery request-reply message；
Second with screen session establishment submodule, for receiving end after completing equipment discovery with transmitting terminal, with transmitting terminal
After completing service discovery, connection foundation, capability negotiation, session establishment, data transmission and the interaction of session completion, with transmitting terminal
It establishes with screen session.
Wherein, second connection establishment module includes:
4th sending submodule after receiving the negotiation request message that transmitting terminal is sent for receiving end, stops video counts
According to decoding, is returned to transmitting terminal and negotiate request-reply message；Wherein, the negotiation request message includes: static images to be sent
Basic parameter；It is described negotiate request-reply message include: the static images that the receiving end can be supported basic parameter and
The connecting pin slogan of the receiving end.
Wherein, data packet head is increased in the data packet of the static images data received, the data packet head includes: number
According to the sequence number of packet, the number of a picture conceptual data packet transmits the number of picture, transmits the compressed format of image data,
The resolution ratio and verification data of image data.
Wherein, the receiving module includes:
Receiving submodule, for by the wireless connection channel, receive transmitting terminal transmission to have the data packet head
Static images data；
Decoding and display sub-module, for being decoded to static images data and showing institute according to the data packet head
State static images.
Wherein, described device further include:
Reception, decoding and display terminate module, after the wireless connection channel dismounting request for receiving transmitting terminal transmission,
Terminate reception, decoding and the display of static images data.
In conclusion the device of the projecting image data of the embodiment of the present invention, is applied to receiving end, can not only realize
The same screen of video data is shared, and when needing this kind of data of shared static images, is switched to static data transmitting scene, leads to
It crosses and establishes the static images wireless connection channel shared with screen, without transmitting static images by same screen session, reduce same screen
Expense in shared realizes static images in the smooth playing of receiving end, promotes wireless display effect, meanwhile, avoid frequency
Network bandwidth expense caused by numerous refreshing screen real-time Data Transmission processing etc. consumes excessively.After transmitting terminal and receiving end are negotiated,
Transmission different-format picture can be facilitated, it can be according to the situation dynamic of Network status and terminal device itself in shared procedure
Variation.
It should be noted that the device is the device for applying the method for the above-mentioned projecting image data for receiving end,
The implementation of the method for the above-mentioned projecting image data for receiving end is suitable for the device, can also reach identical technology effect
Fruit.
The embodiments of the present invention also provide a kind of transmitting terminals of projecting image data, including are applied to hair as described above
The device of the projecting image data of sending end.
It should be noted that the transmitting terminal applies the terminal of the method for the above-mentioned projecting image data for transmitting terminal,
The implementation of the method for the above-mentioned projecting image data for transmitting terminal is suitable for the device, can also reach identical technology effect
Fruit.
The embodiments of the present invention also provide a kind of receiving ends of projecting image data, including are applied to connect as described above
The device of the projecting image data of receiving end.
It should be noted that the receiving end applies the terminal of the method for the above-mentioned projecting image data for receiving end,
The implementation of the method for the above-mentioned projecting image data for receiving end is suitable for the device, can also reach identical technology effect
Fruit.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (25)
1. a kind of method of projecting image data is applied to transmitting terminal characterized by comprising
Transmitting terminal and receiving end are established with after screen session, when transmitting terminal transmits static images to receiving end, are established with receiving end
One wireless connection channel；
Transmitting terminal is transmitted static images data to receiving end, decodes receiving end and show institute by the wireless connection channel
State static images.
2. the method for projecting image data according to claim 1, which is characterized in that transmitting terminal and receiving end are established with screen
The process of session includes:
Transmitting terminal finds request message to receiving end sending device；
Transmitting terminal with receiving end complete equipment discovery after, with receiving end complete service discovery, connect foundation, capability negotiation,
After the interaction that session establishment, data transmission and session are completed, establish with receiving end with screen session.
3. the method for projecting image data according to claim 1, which is characterized in that establish a wireless connection with receiving end
The process in channel includes:
After transmitting terminal gets static images send instructions, negotiation request message is sent to receiving end, request receiving end stops view
Frequency is according to decoding；Wherein, the negotiation request message includes: the basic parameter of static images to be sent；
After transmitting terminal receives the negotiation request-reply message of receiving end return, received according in the negotiation request-reply message
The connecting pin slogan at end and established with the Internet protocol address determined in screen session, establish transmitting terminal and receiving end it
Between wireless connection channel；Wherein, the request-reply message of negotiating includes: the basic of the static images that receiving end can be supported
Parameter.
4. the method for projecting image data according to claim 1, which is characterized in that transmitting terminal passes through the wireless connection
Channel, transmitting static images data to the process of receiving end includes:
Increase data packet head in the data packet of static images data to be sent；The data packet head includes: the sequence of data packet
Number, the number of a picture conceptual data packet transmits the number of picture, transmits the compressed format of image data, image data
Resolution ratio and verification data；
By the wireless connection channel, transmitting has the static images data of the data packet head to receiving end.
5. the method for projecting image data according to claim 1, which is characterized in that transmitting terminal passes through the wireless connection
Channel, after transmitting static images data to receiving end further include:
After getting common send instructions, the transmission of static images data is terminated；
It sends wireless connection channel and removes request to receiving end, remove the wireless connection channel between transmitting terminal and receiving end.
6. the method for projecting image data according to claim 1, which is characterized in that the static images send instructions are
User's operation triggering or detect automatic trigger when content to be transmitted is static images.
7. a kind of device of projecting image data is applied to transmitting terminal characterized by comprising
First connection establishment module is established for transmitting terminal and receiving end with after screen session, and transmitting terminal transmission static images are given
When receiving end, a wireless connection channel is established with receiving end；
Transmission module transmits static images data to receiving end, makes receiving end for transmitting terminal by the wireless connection channel
It decodes and shows the transmission static images.
8. the device of projecting image data according to claim 7, which is characterized in that the first connection establishment module packet
It includes:
First sending submodule finds request message to receiving end sending device for transmitting terminal；
First completes for transmitting terminal after completing equipment discovery with receiving end with receiving end with screen session establishment submodule
After the interaction that service discovery, connection foundation, capability negotiation, session establishment, data transmission and session are completed, established with receiving end
With screen session.
9. the device of projecting image data according to claim 7, which is characterized in that the first connection establishment module packet
It includes:
Second sending submodule after getting static images send instructions for transmitting terminal, sends to receiving end and negotiates to request to disappear
Breath, request receiving end stop video data decoding；Wherein, the negotiation request message includes: the basic of static images to be sent
Parameter；
Wireless connection channel setting up submodule, after the negotiation request-reply message that receiving end returns is received for transmitting terminal, root
According to the internet determined in the connecting pin slogan of receiving end in the negotiation request-reply message and established same screen session
Protocol address establishes the wireless connection channel between transmitting terminal and receiving end；Wherein, the negotiation request-reply message includes:
Receive the basic parameter for the static images that terminal can be supported.
10. the device of projecting image data according to claim 7, which is characterized in that the transmission module includes:
Submodule is handled, for increasing data packet head in the data packet of static images data to be sent；The data packet head packet
Include: the sequence number of data packet, the number of a picture conceptual data packet transmit the number of picture, transmit the compression of image data
Format, the resolution ratio and verification data of image data；
Submodule is transmitted, for transmitting the static images data with the data packet head extremely by the wireless connection channel
Receiving end.
11. the device of projecting image data according to claim 7, which is characterized in that described device further include:
It sends and terminates module, for terminating the transmission of static images data after getting common send instructions；
Wireless connection channel removes module, removes request to receiving end for sending wireless connection channel, makes transmitting terminal and receive
Wireless connection channel between end is removed.
12. a kind of method of projecting image data is applied to receiving end characterized by comprising
After receiving end and transmitting terminal are established with session is shielded, when receiving end receives the static images of transmitting terminal transmission, with transmitting terminal
Establish a wireless connection channel；
Receiving end is received the static images data of transmitting terminal transmission, is decoded and shown described quiet by the wireless connection channel
State picture.
13. the method for projecting image data according to claim 12, which is characterized in that receiving end and transmitting terminal are established together
Screen session process include:
Receiving end finds to request after receiving the equipment discovery request message of transmitting terminal transmission to the transmitting terminal returning equipment
Response message；
Receiving end with transmitting terminal complete equipment discovery after, with transmitting terminal complete service discovery, connect foundation, capability negotiation,
After the interaction that session establishment, data transmission and session are completed, establish with transmitting terminal with screen session.
14. the method for projecting image data according to claim 12, which is characterized in that establish one with transmitting terminal and wirelessly connect
Connect road process include:
After receiving end receives the negotiation request message of transmitting terminal transmission, stop video data decoding, returns and negotiate to transmitting terminal
Request-reply message；Wherein, the negotiation request message includes: the basic parameter of static images to be sent；The negotiation request
Response message includes: the basic parameter for the static images that the receiving end can be supported and the connecting pin slogan of the receiving end.
15. the method for projecting image data according to claim 12, which is characterized in that the static images data received
Data packet in increase data packet head, the data packet head includes: the sequence number of data packet, a picture conceptual data packet
Number transmits the number of picture, transmits the compressed format of image data, the resolution ratio and verification data of image data.
16. the method for projecting image data according to claim 15, which is characterized in that receiving end is wirelessly connected by described
Road is connected, the static images data of transmitting terminal transmission is received, decodes and show that the process of the static images includes:
By the wireless connection channel, the static images data with the data packet head of transmitting terminal transmission are received；
According to the data packet head, static images data are decoded and show the static images.
17. the method for projecting image data according to claim 12, which is characterized in that receiving end is wirelessly connected by described
Road is connected, the static images data of transmitting terminal transmission are received, after decoding and showing the static images further include:
After receiving the wireless connection channel dismounting request that transmitting terminal is sent, the reception of static images data is terminated, decodes and shows
Show.
18. a kind of device of projecting image data is applied to receiving end characterized by comprising
Second connection establishment module is established for receiving end and transmitting terminal with after screen session, and receiving end receives transmitting terminal transmission
Static images when, establish a wireless connection channel with transmitting terminal；
Receiving module receives the static images data of transmitting terminal transmission, decoding for receiving end by the wireless connection channel
And show the static images.
19. the device of projecting image data according to claim 18, which is characterized in that second connection establishment module
Include:
Third sending submodule, for receiving end after receiving the equipment discovery request message of transmitting terminal transmission, to the hair
Sending end returning equipment finds request-reply message；
Second completes for receiving end after completing equipment discovery with transmitting terminal with transmitting terminal with screen session establishment submodule
After the interaction that service discovery, connection foundation, capability negotiation, session establishment, data transmission and session are completed, established with transmitting terminal
With screen session.
20. the device of projecting image data according to claim 18, which is characterized in that second connection establishment module
Include:
4th sending submodule after receiving the negotiation request message that transmitting terminal is sent for receiving end, stops video data solution
Code returns to transmitting terminal and negotiates request-reply message；Wherein, the negotiation request message includes: the base of static images to be sent
This parameter；The request-reply message of negotiating includes: the basic parameters of the static images that the receiving end can be supported and described
The connecting pin slogan of receiving end.
21. the device of projecting image data according to claim 18, which is characterized in that the static images data received
Data packet in increase data packet head, the data packet head includes: the sequence number of data packet, a picture conceptual data packet
Number transmits the number of picture, transmits the compressed format of image data, the resolution ratio and verification data of image data.
22. the device of projecting image data according to claim 21, which is characterized in that the receiving module includes:
Receiving submodule, for receiving the quiet with the data packet head of transmitting terminal transmission by the wireless connection channel
State image data；
Decoding and display sub-module, for being decoded and showing described quiet to static images data according to the data packet head
State picture.
23. the device of projecting image data according to claim 18, which is characterized in that described device further include:
It receives, decoding and display termination module terminate after the wireless connection channel for receiving transmitting terminal transmission removes request
Reception, decoding and the display of static images data.
24. a kind of transmitting terminal of projecting image data, which is characterized in that answer including such as claim 7 to 11 is described in any item
The device of projecting image data for transmitting terminal.
25. a kind of receiving end of projecting image data, which is characterized in that answer including such as claim 18 to 23 is described in any item
The device of projecting image data for receiving end.
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| CN107147887B (en) * | 2017-05-04 | 2018-08-21 | 大连理工大学 | Wireless display method and device |
| JP2023069763A (en) * | 2021-11-08 | 2023-05-18 | セイコーエプソン株式会社 | Image display method for display unit |
| CN116719649A (en) * | 2022-09-01 | 2023-09-08 | 荣耀终端有限公司 | Session notification prompting method, electronic equipment and readable storage medium |
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| US8881170B2 (en) * | 2012-04-30 | 2014-11-04 | Genesys Telecommunications Laboratories, Inc | Method for simulating screen sharing for multiple applications running concurrently on a mobile platform |
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| CN101951515A (en) * | 2010-09-21 | 2011-01-19 | 深圳市同洲电子股份有限公司 | Method, system and set-top box for sharing interface of mobile terminal to television |
| CN104219474A (en) * | 2013-05-30 | 2014-12-17 | 佳能株式会社 | Image processing apparatus and controlling method thereof |
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